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Kākā numbers are skyrocketing in Te Whanganui-a-Tara Wellington thanks to conservation efforts. The summer science series continues with a walk through Zealandia to find out why you shouldn't feed… Audio

Claire Concannon meets the latest addition to the Zealandia ecosanctuary family - toitoi, or common bully. Zealandia CEO Dr Danielle Shanahan explains why these little fish will be an important part… Audio

Alison Ballance visits the Brook Waimārama sanctuary, and discovers that the old saying "many hands make light work" is particularly true when it comes to community conservation. A relatively new… Audio

The return of South Island kākā to the the Ōtepoti Dunedin area has been a bit of a rollercoaster ride. Claire Concannon hears about the tragedies and the triumphs, and the plans for what comes next.

Discover the hidden world of arboreal plants, which get a leg-up in the world by living on trees. Audio

Iwi representatives & conservationists journey to Zealandia sanctuary to plant seeds of the mysterious parasitic flowering plant Dactylanthus or flower of the underworld. Audio

Ocean floor rock cores drilled into the sunken continent of Zealandia are revolutionising our understanding of Earth's history and how continents form. Audio

Modern-day citizen scientists are following in the footsteps of a well-known Wellington naturalist, collecting moths to document a century of change. Audio

Kākā and kea are well-known for being intelligent, and PhD student Daniel Donoghue is interested in how they learn new things. Audio

NIWA freshwater scientist Amanda Valois is co-opting citizen scientists to work out where plastic rubbish in streams is coming from. Audio

Twenty-five years of bird counts have revealed an unexpected consequence to the creation of the predator-free Zealandia Sanctuary. Audio

Kākahi or freshwater mussels are being moved to Zealandia sanctuary in Wellington as part of an ambitious restoration project. Audio

A renaissance in native forest bird numbers in the capital is helped by urban bush and Predator Free Wellington efforts. Audio

Botanists have banded together to bring native mistletoes back to Wellington city, using seeds rescued from a plant growing on a dying tree. Audio

An expedition into Fiordland reveals that takahē numbers are on the rise, and there will soon be a new takahē population in Northwest Nelson. Audio

A hunt for urban lizards in New Zealand involves more than a thousand buckets as well as citizen scientists. Audio

Kohurangi, or Kirk's tree daisy, is rare in the Wellington region, but botanists are taking on the challenge of bringing it back to the city. Audio, Gallery

Four scientists talk about genetics and how it can help in the conservation of rare birds such as little spotted kiwi. Audio

Wellington's Polhill Restoration Project volunteers are looking after rare birds such as nesting kaka and tieke that are spilling into the 'halo' around Zealandia Sanctuary. Video, Audio, Gallery

Joan Watson was there when takahē were rediscoverd in 1948, and DOC ranger Glen Greaves says the population of the giant flightless bird has just reached 300. Video, Audio

More than a million birds have been counted in the last nine years of the garden bird survey, and sparrows and silvereyes consistently top the rankings. Audio

The kaka, or forest parrot, has had its IQ tested for the first time - and in some experiments young naive birds were better problem solvers than older birds that were stuck in their ways. Video, Audio

Use your ears and spend time on your own just listening and observing birds - good advice from one of the world's best known bird-watchers and ex-Goodie, Bill Oddie. Audio

Bird sperm from native species such as robins, as well as introduced dunnocks from Dunedin, may shed light on problems with male fertility and infertile eggs. Video, Audio, Gallery